被动雷达导引头旋转式相位干涉仪测向方法  

A direction finding method for passive radar seeker using rolling phase interferometer

作　　者：祝俊[1] 李昀豪[1] 王军[1] 唐斌[1] 何明[1] 

机构地区：[1]电子科技大学电子工程学院

出　　处：《太赫兹科学与电子信息学报》2013年第3期382-387,共6页Journal of Terahertz Science and Electronic Information Technology

摘　　要：研究了在超宽频段一种被动雷达导引头旋转式干涉仪无模糊测向方法。在2个相邻雷达脉冲到达时,干涉仪2次测量相位差变化不超过π的情况下,可用基于数字积分器解决测向模糊问题。而在干涉仪测量相位差变化超过π的情况下,基于相位连续特性,通过对数字积分器的结果作修正可实现无模糊测向。本文设计并实现了一种针对8 mm波段被动雷达导引头旋转式相位干涉仪测向系统,系统仿真和硬件测试结果证明了该算法的正确性和有效性。A direction finding method for ultra-wide band passive radar seeker using rolling phase inierferometer is proposed. Using digital integrator, the system could solve phase ambiguity under the condition that the change of phase difference from two successively received pulses is smaller than π. Meanwhile, based on the continuity of phase difference, modifying the results of digital integrator solves phase ambiguity when change of phase difference is larger than π. In order to verify the effectiveness of proposed structure and algorithm, an 8mm wavelength passive radar seeker system using rolling phase interferometer is designed and implemented. Simulations and hardware tests show the validity and effectiveness of the proposed method.

关 键 词：旋转式干涉仪 测向 解模糊 被动雷达导引头 

分 类 号：TH744.3[机械工程—光学工程]